package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.DishFlavourMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavourMapper dishFlavourMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Override
    @Transactional
    public void saveWithFlavour(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.insert(dish);
        Long dishId = dish.getId();
        List<DishFlavor> flavours = dishDTO.getFlavors();
        if (flavours.size() != 0 && flavours != null) {
            flavours.forEach(flavour -> {
                flavour.setDishId(dishId);
            });
                dishFlavourMapper.insertBatch(flavours);
        }
    }

    @Override
    public PageResult queryByPage(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.selectDish(dishPageQueryDTO);
        PageResult pageResult = new PageResult();
        pageResult.setTotal(page.getTotal());
        pageResult.setRecords(page.getResult());
        return pageResult;
    }

    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        for (Long id: ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus().equals(StatusConstant.ENABLE)) {
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }

        List<Long> setmealIds = setmealDishMapper.getSetmealDishIds(ids);
        if(setmealIds != null && setmealIds.size() > 0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        dishMapper.deleteBatch(ids);
        dishFlavourMapper.deleteBatch(ids);
    }


    @Override
    @Transactional
    public void editDish(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.update(dish);
        List<Long> list = new ArrayList<>();
        list.add(dishDTO.getId());
        dishFlavourMapper.deleteBatch(list);
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors.size() != 0 && flavors != null) {
            flavors.forEach(flavor -> {
                flavor.setDishId(dishDTO.getId());
            });
            dishFlavourMapper.insertBatch(flavors);
        }
    }

    @Override
    public DishVO getByIdWithFlavor(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> dishFlavor = dishFlavourMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish, dishVO);
        dishVO.setFlavors(dishFlavor);
        return dishVO;
    }

    @Override
    public List<Dish> getByCategoryId(Long categoryId) {
        List<Dish> dishes = dishMapper.selectByCategoryId(categoryId);
        return dishes;
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Dish dish = Dish.builder().status(status).id(id).build();
        dishMapper.update(dish);
    }

    @Override
    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavourMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}
